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Pyrargyrite and Antigorite Optical Properties


Antigorite and Pyrargyrite Optical Properties


Optical Properties

Luster
Adamantine   
Waxy, Silky, Resinous, Greasy   

Pleochroism
Distinct   
pale greenish yellow.   

Dispersion
Not Available   
Not Available   

Transparency
Translucent   
Translucent   

Refractive Index
2.881-3.084   
1.530-1.575   

Optic Character
Not Available   
Not Available   

Crystal System
Trigonal   
Monoclinic Domatic H-M Symbol (m) Space Group: Cm   

Birefringence
0.203   
Not Available   

Clarity
Translucent   
Translucent   

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Pyrargyrite and Antigorite Optic Character

Pyrargyrite and Antigorite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Pyrargyrite and Antigorite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Pyrargyrite and Antigorite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Pyrargyrite and Antigorite Transparency

Similar to their colors, Pyrargyrite and Antigorite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Pyrargyrite is Translucent while Pyrargyrite is Translucent in appearance.

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